import axios from 'axios'
import {
	Notification,
	MessageBox,
	Message,
	Loading
} from 'element-ui'
import store from '@/store'
import {
	getToken
} from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import {
	tansParams,
	blobValidate
} from "@/utils/ruoyi";
import cache from '@/plugins/cache'
// import { saveAs } from 'file-saver'
import router from '@/router'; // 导入 Vue Router

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = {
	show: false
};

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// axios.defaults.headers['AuthorizationToken'] = '111111111111111'
// axios.defaults.headers['modeDebug'] = 'login'

// 创建axios实例
const service = axios.create({
	// axios中请求配置有baseURL选项，表示请求URL公共部分
	baseURL: process.env.VUE_APP_BASE_API,
	// 超时
	timeout: 10000
})
console.log(process.env.VUE_APP_BASE_API)

// request拦截器
service.interceptors.request.use(config => {
	// 是否需要设置 token
	// const isToken = (config.headers || {}).isToken === false
	// 是否需要防止数据重复提交
	const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
	// if (getToken() && !isToken) {
	config.headers['AuthorizationToken'] = sessionStorage.getItem('token') // 让每个请求携带自定义token 请根据实际情况自行修改
	// }
	if (config.upload) {
		config.headers['Content-type'] = "multipart/form-data"
	}
	// get请求映射params参数
	if (config.method === 'get' && config.params) {
		let url = config.url + '?' + tansParams(config.params);
		url = url.slice(0, -1);
		config.params = {};
		config.url = url;
	}
	if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
		const requestObj = {
			url: config.url,
			data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
			time: new Date().getTime()
		}
		const sessionObj = cache.session.getJSON('sessionObj')
		if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
			cache.session.setJSON('sessionObj', requestObj)
		} else {
			const s_url = sessionObj.url; // 请求地址
			const s_data = sessionObj.data; // 请求数据
			const s_time = sessionObj.time; // 请求时间
			const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
			if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
				const message = '数据正在处理，请勿重复提交';
				console.warn(`[${s_url}]: ` + message)
				// return Promise.reject(new Error(message))
			} else {
				cache.session.setJSON('sessionObj', requestObj)
			}
		}
	}
	return config
}, error => {
	console.log(error)
	Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
	// 未设置状态码则默认成功状态
	// console.log(res)
	const code = res.data.state || 200;
	// 获取错误信息
	const msg = errorCode[code] || res.data.error || errorCode['default']
	// 二进制数据则直接返回
	if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
		return res.data
	}
	if (code === '20001') {
		if (!isRelogin.show) {
			isRelogin.show = true;
			// console.log(code)
			MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
				confirmButtonText: '重新登录',
				cancelButtonText: '取消',
				type: 'warning'
			}).then(() => {
				isRelogin.show = false;
				router.push('/login'); // 跳转到指定页面
			}).catch(() => {
				isRelogin.show = false;
			});
		}
		return {}
	} else if (code === '500') {
		Message({
			message: msg,
			type: 'error'
		})
	} else if (code !== '200' && code !== '20001') {
		Message({
			message: msg,
			type: 'error'
		})
		return res.data
	} else {
		return res.data
	}
},
	error => {
		console.log('err' + error)
		let {
			message
		} = error;
		if (message == "Network Error") {
			message = "后端接口连接异常";
		} else if (message.includes("timeout")) {
			message = "系统接口请求超时";
		} else if (message.includes("Request failed with status code")) {
			message = "系统接口" + message.substr(message.length - 3) + "异常";
		}
		Message({
			message: message,
			type: 'error',
			duration: 5 * 1000
		})
		return Promise.reject(error)
	}
)

// 通用下载方法
export function download(url, params, filename) {
	downloadLoadingInstance = Loading.service({
		text: "正在下载数据，请稍候",
		spinner: "el-icon-loading",
		background: "rgba(0, 0, 0, 0.7)",
	})
	return service.post(url, params, {
		transformRequest: [(params) => {
			return tansParams(params)
		}],
		headers: {
			'Content-Type': 'application/x-www-form-urlencoded'
		},
		responseType: 'blob'
	}).then(async (data) => {
		const isLogin = await blobValidate(data);
		if (isLogin) {
			const blob = new Blob([data])
			saveAs(blob, filename)
		} else {
			const resText = await data.text();
			const rspObj = JSON.parse(resText);
			const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
			Message.error(errMsg);
		}
		downloadLoadingInstance.close();
	}).catch((r) => {
		console.error(r)
		Message.error('下载文件出现错误，请联系管理员！')
		downloadLoadingInstance.close();
	})
}

export default service